Clevis.



1. w. HARTLEY.

CLEVIS.

APPLICATION man SEPT.2I. 1914.

Patented May 11, 1915.

ATTORNEYS.

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JOHN W. HARTLEY, OF NASHOTAI-L-WISCONSIN'Q GLEVIS.

Application filed September 21, 1914.

To all whom it may concern:

Be it known that I, JOHN W. HARTLEY, a citizen of the United States, andresident of Nashotah, in the county of Waukesha and State of WVisconsin,have invented new and useful Improvements in Clevises, of which thefollowing is a description, reference being had to the accompanyingdrawings, which are a part of this specification.

The invention relates to clevises.

The invention designs more particularly to provide a clevis which, inand of itself, relieves the member or bodies to which it is connected,from undue shock occasioned by the initial pull in starting a load.

The invention further designs to produce a clevis which is adapted to bepivotally connected to a load, to be pulled or raised, and which iscurved outwardly from its pivotal connection, and is connected at itsoutwardlycurved end by suitable means to the draft animal or othersource of power, which construction results in a clevis which willrelieve both the member to which it is con nected, and the animal orsource of power, from the initial shock occasioned by the pull on theload, due to its curved shape, as the initial shock will be taken careof by the spring of the clevis itself.

The invention designs to produce a new and improved form of clevis.

In the drawings, Figure 1 is a View of the clevis embodying theinvention, showing it connected up to a double-tree of a vehicle; Fig. 2is a plan View of the clevis; Fig. 3 is an elevation of the clevis.

The clevis consists of a substantially U- shaped member 10 preferably ofspring metal, whose transverse portion is curved as shown at 11 in Fig.2, and whose extremi- 'ties 12 are bent over upon themselves, to

provide an eyelet 13 through which a bolt such as 14 may be inserted, topivotally connect the clevis to a member of the load to be pulled. Inthis instance, Fig. 1 shows the clevis pivotally connected by the bolt14 to the double-tree 15 which is secured on the wagon pole 16, thoughit will be apparent that the clevis may be used on swingletrees ofvehicles, on agricultural implements, and on Specification of LettersPatent.

Patented May 11, 1915.

Serial No. 862,719.

other constructions where its use may be applicable in connection withthe-drawing of a load.

The U-shaped clevis is curved outwardly and away from the center ofdraft, as shown at 18 in Fig. 2, and when the clevis is in use, as shownin Fig. l,where the swingletrees 19 are pivotally connected to the ends17 of the clevises by the hook members 20, the initial shock occasionedby the pull of the animals upon the swingletrees 19, will be overcome bythe resiliency of the clevis itself, there being a tendency of theparallel members of the clevis to straighten out or move inwardly towardthe center of draft on the initial application of the pulling force,which will result in relieving both the animal and the bolts from thisshock. In other words, the clevis itself not only ac complishes itsordinary functions, but provides a resilient connection between the loadand the animal or other source of power. It will also be noted that theclevis need not necessarily be limited to its use in connection with adraft animal, but might be equally well employed in connection with anysuitable power, to drawthe load, and will re-' lieve the members towhich it is connected,

of initial shock.

The invention thus exemplifies a clevis which, in and of itself, isadapted to relieve the two members to which it is connected,

of the shock occasioned by the initial pull of one of these membersupon'the other.

The invention is not to be restricted to the details of constructionherein set forth, but may be modified so as to be within the scope ofthe appended claims.

What I claim is:

1. A clevis comprising a member having spring arms, adapted tostraighten under tension, connected together at one of their ends, andmeans at the ends of said clevismember for connecting said clevis to aplurality of members to space said members apart and form a connectiontherebetween, said clevis-arms having a portion out of line with theline of draft of the clevis whereby the members to which the clevis isconnected will be relieved of the initial shock occasioned by a forcetending to separate these members to which the ends of the clevis areconnected.

2. A clevis comprising substantially parallel extending spring arms,adapted to straighten under tension, connected together at one of theirends, Which arms are curved from the line of draft of the clevis,whereby the members to which the clevis is connected will be relieved ofinitial shock When said 10 JOHN W. HARTLEY. WVitnesses:

H. R. NEIKEL, PHARES PETERSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). G. v

